The ballistics advantage 16 5.56 government profile midlength ar 15 modern series barrel is machined from 4150 chrome moly vanadium steel with a qpq corrosion resistant finish and qpq coated m4 feed ramp extension.With a mid length gas system and.750 gas block journal. Caliber Or Gauge: 223 Remington/5.56 NATO Length: 16 Model: AR Barrel Twist: 1:7 Sights: None Bore Type: Rifled Finish: QPQ Corrosion Resistant Type: All Purpose Barrel Type: Midlength Government Profile Ammo Type: Tactical Barrel Features: 1/2-28 tpi
